Rotary pump



March 27, 1945. I J; FUCHS 2,372,480

ROTARY PUMP Filed Nov. 12, 194; 2 Sheng-sheet 1 March 27, 1945. J. FUCHS,2,372,480

- Ro-TARY PUM;a

Filed Nov. 12, 1943 2 Sheets-Sheet 2 j figjifj *"J--HH--PEQ----f- L- lPatented Mar. 27, 1945 IROTARY PUMP Julius Fuchs, Cleveland, Ohio,assignor of fortyve per cent to Ohio Augustus J. Baker, Cleveland,

Application November 12, 1943, Serial No. 510,050 v2 Claims. (Cl.10S-136) The present invention relates to a rotary pump of greatsimplicity and of efficiency. g. .The invention lso comprehendsimprovements in the specific construction and arrangement ofparts whichwill be hereinafter described and particularly pointed out in theclaims.

This invention relates to pump, compressor,

high non-pulsating and similar machines of the Atype employing blades ofeach drum are main eccentrically,`and each shaft is provided with l'anti-friction bearings.

A primary object of the present invention is the production cfa pump of.this type which is balanced mechanically, which is practicallynonpulsating and in which the torque application closely approachesuniformity.

In the accompanying drawings in which similar reference-numeralsindicate the same parts throughout the several views,

Figure 1 is a view in elevation showing the interior of the pump andillustrating the manner in which the drums or rotors are mounted in thecasing, and also showing in dotted lines the equal meshing gears mountedon the drum shafts.' V

` Figure 2 is a view in elevation of the cover plate'of the pump, andillustratingthe manner in which the eccentrically positioned shafts aremounted vin the cover plate ,and on which the roller bearings arerotatably mounted.v

. Figure 3 is a sectional view taken on line A-\-A in Figure 1.

Figure 4 is an end view on an enlarged scale of the rotor 'or drumshowing the radial ways for the blades or vanes therein.

Figure 5 is a view on an' enlarged scale showing the drum or rotor inthe same position as -that shown in Figure 3, and illustrating theposition of the blades or vanes in their cooperative relation with theroller bearings mountedpn the shaft in the cover plate.

Figure 6 is a view on. an enlarged scale of the rotor or drum shown inFigure 3, and illustrating the position of the vanes or blades at rightangles that extends beyond .to those shown roller bearings is in Figure5 in their cooperative relation with the roller bearing mounted on theshaft in the cover plate.

Figure 7 is a detail view in elevation of one of the blades shown in theenlarged view in Figure 5.

Figure 8 is'a detail view in elevation of one of the blades shown in theenlarged view in Figure 6.

Referring to the drawings the pump case is formed in two parts I0 andil.' In the part l0 there is provided two chambers l2 and.. which thedrums or rotors i6 and I5 are eccena trically and rotatably mounted. Inthe. drums there are provided radial ways lli in which the blades orvanes slidingly t.

The part I0 lis provided with an inlet opening Il and an outlet openingdividesl into two laterally disposed channels I9 and 20, whichcommunicates with the chambers l2 and i3. The division is caused by thewall 2l, which also extends upwardly between the rotors and terminatesin the outlet opening as at 22 where it again divides the opening intotwo channels 23 and 24 through which the fluid is discharged 'into theoutlet opening. The passage of the iiuid through the pump is indicatedby arrows. y

lFlach rotor or' drum is provided with a shaft the part i0 of the case.The shafts are rotatably journalled in a bearing as at 25, see Fig. 3.Each shaft is provided with a fixedly mounted gear as at 26 and 21.These meshing gears are equal each being provided with the same numberof teeth. One of the shafts extends beyond the gear keyed thereon and isprovided with a coupling as at 28, see Fig. 3, by means of which thepump may be connected to a suitable electric motor to actuate the pump.The teeth are not shown in Fig. i on the gears, but it is to beunderstood that the teeth .are continuous around the periphery of eachgear and are in meshing relationship.

Il or cover plate there are pro- 30 on which the bearings are mounted.One set of these shown at 3|, 32 and 33 in Figs.

roller 3, 5 and. -6. The Shaft is plvded with a head 34 bearings fromslipping o the as at to connect As both the shafts to prevent theshaft,and a shouldered end lthe shaft to the cover plate. are the same,it

of one will suffice for both. and

The parts I0 Il are held together by a number of bolts and nuts 36 and31; the holes for the bolts are shown 38. One set of theblades or vanesis 'provided with I8. The inlet opening.

is thought that the description y Y wise.

a prole or-edgethat is interrupted as at 39 so that portions of theblade rides upon two of the ball bearings as at 3| and 33, see Figs. 3,5 and 6. The diametrically opposite blades or vanes are so formed thatthey are provided with a projection 40 that rides upon the ballbearing-32, see

Figs. 3, 5 and 6. The blades are-all notched at one end as at 4l, topermit the blades to cooperate with the ball bearings mounted on theshafts in the cover plate. The vanes or blades are held in frlctionalcontact with the chamber wail in their advancing or receding positionvbymeans of the shafts with their roller bearings thereon that are soarrangedthat they project into the interior of the drums eccentrically.It will be noted in Fig. 1 that the blades or vanes in the workingchamber on the right as you. look at the drawings are .forty-fivedegrees from the vertical or horizontal, while the blades in thexworking vchamber to the left are vertical and horizontal, and when.assembled the gears are mounted on the shafts when the blades are thuspositioned, because it has been found that-the pump when so gearedproduces better results. The rotor drum in the working chamber to theAazwafiso vanes arranged radially in the rotor drums and right turnsclockwise While the rotor drum in the working chamber to the left turnscounter-clock- It is believed that nism as a Whole will be clear, inview of the foregoing description which has been given in connectionwith that of the construction of the same.

0f course, changes may be made in details of construction andarrangement of parts withoutV departing from the spirit and scope of myinvention. I do not limitA myself, therefore, to the exact form hereinshown and described other than lby the appended claims.

What I claim asmy invention and desire to secure by Letters Patent ofthe United States is:

1. A pump of theclass described comprising a casing, a cover platetherefor, the casing having an inlet opening and an .outlet opening, andalso i having a plurality of working chambers therein,

a. wall formation positioned in the casing its arrangement being such asto provide laterally disposed channels communicating with 4the workingchambers therein from the inlet opening, and extending upward betweenthe workingv chambers and forming a portion thereof. but stopping theoperation of the mechashort of the length of the outlet opening toprovide discharge channels communicating with the Voutlet opening, rotordrums eccentrically mountslidably mounted therein, means mounted in 'andsupported bythe cover plate and projecting into the interior oftherotor. drums eccentrically, a pair lof the oppositely disposed vaneshaving :an interrupted edgeand adapted to ride upon spaced portions ofthe means projecting into the interior of .the rotor drums, whilst thepair of vanes diametrically opposite are each provided with avprojection that rides upon the portion between the spaced portions, thesaid projecting means adapted vto effect frlctlonal contact of the vaneswith the wall in the working chambers, and means to actuate the rotordrums in'unison.

`2. A pump of the class described, comprising, in combination, a casinghaving an inlet and 'outlet opening and also having a plurality ofworking chambers therein, a wall formation in the casing its arrangementbeingsuch as to provide laterally disposed channelscommunicating withthe working chambers from `the inlet opening, and extending upwardwithout interruption veach rotor drum .having a point of tangency withthe working chambers symmetrically disposed at` an angle offorty-iivedegrees to the vertical axis l of the rotor drums to the right Aand leftabove the horizontal axis of the aforesaid rotor drums, a pair of varieshaving a notched end and a notched edge oppositely slidably mounted inradial slots in therotor drum, a second pair of venes having anotchedend and an edge having a projection thereon, oppositely slidablymounted in the other of the radial slots in the rotor drums, a coverplate for the casing, a headed shaft xed in the cover plate, frictionreducing means mounted on the fixed shafts and cooperating with the vanenotches extending into the rotor drums eccentrlcally, the aforesaidfriction reducing means adapted to maintain the vanes in fric'- tionalcontact with the chamber walls on, rotation of the rotor drums, andmeshing gears con-

